OKELO, N. B. NORM BOUNDS FOR CONTRACTIVE NORMALOID OPERATORS. Journal of Global Research in Mathematical Archives(JGRMA), [S. l.], v. 4, n. 9, p. 07–12, 2017. Disponível em: https://www.jgrma.com/index.php/jgrma/article/view/318. Acesso em: 9 may. 2025.